Adapter and handle for spray guns



Sept. 16, 1952 5, J STONE 2,610,895

ADAPTER AND HANDLE FOR SPRAY GUNS Filed Aug. 10, 1949 ill HI l I I iINVENTOR. 1 2e SIDNEY 01' Grams I l l BY M @4 wwvflmm ATTORNEYS PatentedSept. 16, 1952 UNITED STATES PATENTFFlC El- ADAPTER AND HANDLE FOR SPRAYeUNs Sidney J. Stone, Lyndhurst, Ohio I Application August 10, 1949,Serial No. 109,493

This invention relates to improvements in an adaptor and handle for usewith a spray gun adapted to be attached to the nozzle of a vacuumcleaner or other source of air under pressure.

An object of the present invention is to provide an adaptor to fitbetween a standard nozzle for supplying air under pressure and astandard spray gun normally used with such a nozzle together with ahandle attached to the adaptor with connections to fit the spray gun sothat the spray gun may be controlled by a trigger mounted on the handle.

Other objects and advantages of the present invention will be apparentfrom the accompanying drawings and description, and the essentialfeatures will be set forth in the appended claims.

In the drawings, I

Fig. 1 is a central sectional view through one type of spray gunshowing'my improved adaptor and handle attached thereto;

Fig. 2 is'a top plan view of the same;

Fig. 3 is a sectional view taken along the line 3-3 of Fig. 1; whileFig. 4 is a view similar to a portion of Fig. 1 showing a modified formof my device where the handle is constructed in such a way that the airflow is through the handle itself.

My device may be utilized with many types of spray guns which areadapted to be utilized by attachment to the nozzle of a vacuum cleaneror the like which supplies air under pressure. I have chosen to show mydevice as applied to a spray gun illustrated, described and claimed inthe copending application of Franklin P. Morrow and Harold D. Meyers,Serial No. 66,474, filed December 21, 1948, to which reference may behad for a more complete description of the spray gun if necessary ordesirable. It is sufficient to state here that the liquid to be sprayedis carried in a standard glass jar l0 fittedwith a screw cap H to whichis attached the spray head l2. Air in the chamber I3, passing throughregistering openings l4 and I5 located respectivelyin the spray head l2and the cap I I, introduces air pressure inside the jar and above theliquid 16 in the jar. This places the liquid under pressure and theescape of this liquid out the discharge pipe I! is controlled by meansof a valve l8 which has a stem 19 extending upwardly through the sprayhead l2 and provided with an operator button 20 at the top. A spring 34normally urges the valve [8 toward closed position. It will be notedthat there is an opening 2| of greater diameter than the mouth of thedischarge pipe I! so that air escaping from the chamber 13 5 Claims.(01. 299-,-s9)

around'the liquid stream emerging from the pipe l1 causes a fine spray.l

It'will be noted that the walls l2a at the rear end of the spray head 12are of frusto-conical formon the inside flaring rearwardly and outwardlyto accommodate a nozzle 22 shown in. Fig. l as coming from-a vacuumcleaner or othersimilar source of air under pressure. The nozzle 22 hasa form complementary to the surface l2a. so that'the parts normally givea snug fit when used as set forth in the above mentioned copendingapplication of Morrow and. Meyers.

My invention provides an adaptor 23 having at its forward end a nozzle23a, the outside'wall of which is of irusto-conical form complementaryto the wall surface [2a previously described.v The rear end of theadaptor-is provided with an interior surface 23b of frusto-conical formand adapted to fit the nozzle 22. I thus make it possible to remove thespray head I2 from the nozzle 22,*then placing the adaptor 23 on thenozzle 22 and placing the-spray deviceon the nozzle 23a of the adaptor.The deviceis then ready to utilize my novel control means.

Secured rigidly to theadaptor 23 is a handle, 24 which extendsdownwardly fromthe mid-por-- tion of the under side of the adaptor.Onthe side of the handle 24 nearest the jar In there is a projection 25extending forwardly a short dis! tance and fixed rigidly to the handle.Pivotally mounted on this projectionat 26 is a trigger. actuator 21. Theupper end of this handle 21a is bent toward the rear so as to provide abell crank of approximately'ninety degree angle in. form. A double linkof bail 28 has its lower end piVOtally connected to the arm 21a of thetrigger, handle at 29. The split side portions 28a of the bail embracethe adaptor 23. The upper end of the ball is passed through a suitableopening 30 in a lever 3| which is pivotally mounted at 32 on abracket=33 which .is rigidly attachedto the top forward portion of theadaptor 2 3. The forward end'of the-lever 3| hasa rounded nose 3Iq whichengages the operating the valve stem [9.

The operation of my device should now be apparent. -With the parts inthe position'shownin Fig. 1 and with liquid IS in the jar l0, and asource of air under pressure provided at thenozzle '22, the operatorgrasps the handle 24: which -is parallel to and to the rear of the jar-I0 and not substantially longer than the vertical With the hand graspingheight of the jar ID. the handle 24, a pressure is applied by the fingerof the same hand to the forward side of the button 20 'for trigger 21.Oscillation of the trigger in a counterclockwise direction about itspivot 26 will cause the bail 28 to move upwardly causing the rear end oflever 3I to move upwardly and the forward end thereof to move downwardlyso that the nose 3Ia presses on the button and opens the valve I8 so asto actuate the spray. I have thus devised a self contained adaptor andtrigger control handle which may be readily adapted to fit between anynozzle and spray gun for'the purpose described.

In the modification of Fig. 4, the jar or res ervoir I0, its closing capor cover I I and the spray head I2 together with the spray actuatorbutton 20 and associated parts are all as described in connection withFig. 1. The adaptor 34 ha a forwardly directed frusto-conical end 34:;which is a snug sliding fit within the frusto-conical collar I 2a whichis the same as the similar num-' bered part in Fig. l. Rigidly connectedwith the adaptor 34 is a hollow handle 35 extending generally at rightangles to the central axis through the .head I2 andthe adaptor 34. Inother words, the handle 35 is generally vertical when the device is inuse as is the handle 24 of the first described form. The lower end ofthe handle 35 is flared outwardly as indicated at 35a so as to fit thenozzle 22 which is of the same form as the nozzle 22 shown in Fig. 1 andmay be connected with a vacuum cleaner or other similar source of airunder pressure. In other words, the parts 22 and I2 of Fig.4 are likethe similarly numbered parts of Fig. 1 but the adaptor portions betweenthese parts have been changed so as to incorporate in Fig. 4 a hollowhandle which serves-the double purpose of manipulating the spray devicewhile at the same time the flow of air occurs directly through thehandle.

' The trigger mechanism for actuating the device of Fig. 4 is exactlyanalogous to that described in connection with Fig. 1. Here the bracket25' is secured to the adaptor 35 rigidly as was the bracket 25 on thehandle 24 in Fig. 1. The trigger 21 has an arm 21a which is connected tothe yoke 28 which has the yoke parts 28a passing on opposite 'sides ofthe adaptor 34 in the same manner as the first described-form shown inFig. 3. The yoke is pivotally connected at 30 to the rear end of lever3I which is pivotally mounted at 32 on the bracket 33 which is securedonthe adaptor 34 in the same position as the bracket 33'was secured onthe adaptor 23.

The operation of the device of Fig. 4 is the same as that of Fig. 1,namely, the operator holds the-handle 35 and presses on the trigger 2'!which causes the lever 3I to press downwardly on the button 20 120release the spray from the spray head I 2.

-"What-I claim is:

'1. A device for use with a spray gun assembly having a liquid reservoirwith a discharge pipe communicating with said reservoir and a valvecontrolling discharge from said reservoir through said pipe and anoperator for said valve, and said assembly including a spray headconnected with said reservoir and with a sleeve-like rear end adapted tofit a nozzle for supplyof air under pressure, said spray head providinga chamber at' its forward end closely surrounding the mouth of'saiddischarge pipe, there being an opening provided for air ingress to saidreservoir from said head and another opening provided for egress or airfrom said chamber around the mouth of said discharge pipe, said devicecomprising an adaptor in the form of a tube having a nozzle at its frontend adapted to fit said sleeve-like end of said spray head, said tubehaving a sleeve-like end at its rear end adapted to fit said air supplynozzle, whereby the exterior surface of said nozzle and the interiorsurface of said sleeve-like end are substantially identical, a handlerigid with said adaptor and extending at an angle away from it, anactuator carried by said handle, and parts mounted on said adaptor andop'eratively connected with said actuator and said operator forcontrolling said valve operator by movement of said actuator.

2. The combination of claim 1 wherein said handle extends downwardlyfrom said adaptor, and said actuator is near the upper end of saidhandle and adjacent said adaptor.

3. The combination of claim 1 wherein said operator for said valveextends out of the top of said spray head, a lever pivotally mounted ontop of said adaptor, said lever having one end engaging said operator,said handle extends downwardly from said adaptor, said actuator is nearthe-upper end of said handle, and a link connects said actuator withsaid lever.

4. A device for use with a spray gun assembly having a liquid reservoirwith a discharge pipe communicating therewith and having a finaldischarge mouth and a valve controlling discharge from said reservoirthrough said pipe and an operator for said valve, and said assemblyincluding a spray head connected with said reservoir and with asleeve-like 'end adapted to fit a nozzle for supply of air underpressure, there being an opening provided for air ingress to saidreservoir from said head and another opening provided for egress of airfrom said head around the mouth of said discharge pipe; said devicecomprising an adaptor in the form of a tube having a nozzle at its frontend adapted-to fit said sleeve-like end of said spray head, said adaptorhaving a sleeve-like collar at its other end adapted to fit said airsupply nozzle, a handle rigid with said adaptor intermediate the twoends thereof, an actuator carried by said handle, and parts mounted onsaid adaptor and opera tively connected with said actuator and saidoperator for controlling said valve operator by movement of saidactuator.

5. The combination of claim 4 wherein said handle is hollow, and thehollow of said handle forms a passageway in series between the two' endsof said adaptor.

SIDNEY J. STONE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,151,254 Enghauser Aug. 24, 19151,196,414 Zimmer Aug. 29, 1916 1,436,145 Birkenmaier Nov. 21, 19221,770,164 Paasche July 8, 1930 1,787,998 Schylander Jan. 6, 19311,806,784 Brever May 26, 1931 1,853,636 Perrin Apr. 12, 1932 FOREIGNPATENTS Number Country Date 312,284 France May 23, 1929

